[Notwithstanding]

First of all, this is a business facility open to all people, located within a hospital open to all. So it is not like a private home.

Second, if you had some "necessity" then you actually could trespass even in a private home. If you knew I was about to kill a baby after tricking the mom into thinking its a blob of tissue, etc. etc. (insert the litany of lies abortion lovers tell pregnant moms), and that I had a track record of doing so, then you would have a good case for legal necessity. Same as if you knew I was going to chop the toes off my dog.

[Catspaw]

Second, if you had some "necessity" then you actually could trespass even in a private home.

Try to do that in about 99% of any freeper home & you'd have a loaded weapon of some sort pointed at a significant part of your body.

However, I would like to see your legal cite for that "necessity" defense.